Title :
Resonant frequencies and mode shapes of switched reluctance motors
Author :
Cai, William ; Pillay, Pragasen
Author_Institution :
Dept. of Electr. & Comput. Eng., Clarkson Univ., Potsdam, NY, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
The wide application of switched reluctance motors (SRM) is limited by their higher vibration and acoustic noise. An accurate determination of resonant frequencies and mode shapes of the SRM stator is therefore essential for low acoustic noise design. Based on the structural finite element method and elasticity theory, 3D vibration modes and resonant frequencies of a 5 HP SRM with 8/6 poles are demonstrated and calculated in this paper The stator stack with both a smooth frame and a ribbed frame are examined. The effects of an encased frame and a keyed frame on the free vibration modes and resonant frequencies of SRM stator are compared. Accelerometer test results on a SRM verify some of the numerical computations
Keywords :
acoustic noise; elasticity; finite element analysis; machine theory; reluctance motors; stators; vibrations; 3D vibration modes; 5 hp; 8/6 poles SRM; accelerometer test results; acoustic noise; elasticity theory; encased frame; free vibration modes; keyed frame; low acoustic noise design; mode shapes; resonant frequencies; ribbed frame; smooth frame; stator; stator stack; structural finite element method; switched reluctance motors; vibration; Accelerometers; Acoustic noise; Elasticity; Finite element methods; Reluctance machines; Reluctance motors; Resonant frequency; Shape; Stators; Testing;
Journal_Title :
Energy Conversion, IEEE Transactions on
